Do messianic Jews claim to be the beneficiaries of the new covenant now?

Do messianic Jews say that the following is true in their lives?: > NIV Jer 31: 33b: ...“**I will put my law in their minds and write it on their hearts**. I will be their God, and they will be my people. 34**No longer will they teach their neighbor, or say to one another, ‘Know the Lord,’ because they will all know me, from the least of them to the greatest,**” We are told in Hebrews 10:9-18 (and elsewhere) that Jesus ratified the new covenant with the houses of Israel and Judah when he died. It appears that the new covenant speaks of a pan-Israeli supernatural knowledge of the Torah rather than individual knowledge involving teaching that I've not heard any express as being realized in modern times. What do messianic Jews say about the outworking of the new covenant? Was it fulfilled in apostolic times and now gone? Is it active now? Or will it be active in the future?